Hybrid tea rose plant named `JAClion`

ABSTRACT

A new and distinct variety of rose plant of the hybrid tea class, having a vigorous, upright, branching growth habit; formal, hybrid tea-shaped flowers in attractive pastel shades; glossy, dark green, leathery foliage; resistance to powdery mildew and rust; and very pleasant light-to-moderate scent.

The present invention relates to a new and distinct variety of roseplant of the hybrid tea class which was originated by me by crossing thevariety JACara, U.S. Plant Pat. No. 6,316, with the variety Medallion,U.S. Plant Pat. No. 2,997.

The primary objective of this breeding was to produce a new rose varietyhaving the vigorous habit, clean foliage and heavy flower production ofthe female hybrid tea parent combined with the extremely large flower ofthe male parent. The objective was substantially achieved, along withother desirable improvements, as evidenced by the following uniquecombination of characteristics that are outstanding in the new varietyand that distinguish it from its parents, as well as from all othervarieties of which I am aware:

1. Vigorous, upright branching plant;

2. Formal, classic hybrid tea-shaped flower in attractive pastel shades;

3. Glossy, dark green, leathery foliage;

4. Resistance to powdery mildew and rust; and

5. Very pleasant, light-to-moderate scent.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., shows that the foregoing and all other characteristicsand distinctions come true to form and are established and transmittedthrough succeeding propagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with The RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent.--JACara, U.S. Plant Pat. No. 6,316.

Pollen parent.--Medallion, U.S. Plant Pat. 2,997.

Classification:

Botanical.--Rosa hybrida.

Commercial.--Hybrid tea.

FLOWER

Observations made January through September, 1996 from specimens grownin a garden environment at Somis, Calif.

Blooming habit: Recurrent.

Bud:

Size.--13/4 inches to 2 inches long when the petals start to unfurl.

Form.--The bud form is long, pointed ovoid.

Color.--When sepals first divide, bud color is Yellow-White Group 158Aedged at the tip of the bud in Red Group 43C to 43D. When half blown,the upper sides of the petals are Red Group 43D at the edges,Yellow-White Group 158C in the middle and Yellow-White Group 158A nearthe base; and the lower sides of the petals are Yellow-White Group 158A.

Sepals.--Color: Green Group 138A. Surface texture: Covered in finehairs. There are three lightly appendaged sepals. There are twounappendaged sepals with hairy edges.

Receptacle.--Color: Green Group 137D with some bronze coloration whentouched by the sun. Shape: Funnel. Size: Large (5/8 inch × 1/2 inch).Surface: Smooth.

Peduncle.--Length: Medium (3 inches). Surface: Smooth. Color: Bronzy.Strength: Stiff, erect.

Bloom:

Size.--Large. Average open size is 5 to 6 inches.

Borne.--Singly.

Stems.--Medium. Average length is about 14 to 18 inches.

Form.--When first open: High centered. Permanence: Outer petals curlback.

Petalage.--Number of petals under normal conditions: 30 to 35.

Color.--The upper side of the petals is Yellow-White Group 158A at thebase, Yellow-White Group 158C in the center, and Red Group 43D at theedge. The reverse side of the petals is Yellow-White Group 158A. Thebase of each petal has a small yellow (Yellow Group 10C) half moon atthe point of attachment. The major color on the upper side isYellow-White Group 158A.

Variegations.--None.

Discoloration.--The general tonality at the end of the first day: Nochange. At the end of the third day: Gradual change in color to more andmore Red Group 43D. This change continues through to petal drop at daysix or seven.

Fragrance.--Moderate.

Petals:

Texture.--Thick.

Shape.--Round.

Form.--Tips slightly recurved, edges slightly quilled.

Arrangement.--Imbricated, with few petaloids in the center.

Persistence.--Drop off cleanly.

Lastingness.--On the plant: Fair (6 to 7 days). As a cut flower: Fair (7to 8 days).

Reproductive parts:

Anthers.--Size: Large. Quantity: Many. Color: Yellow. Arrangement:Regular around styles.

Filaments.--Color: Yellow.

Pollen.--Color: Gold yellow.

Styles.--Color: Red.

Stigmas.--Greenish white.

Form: Bush.

Growth: Vigorous, upright, branching. (Height in California after oneyear of growth is 5 feet.)

Foliage: Number of leaflets on normal mid-stem leaves: 5.

Size.--Large (51/2 to 6 inches × 5 inches).

Quantity.--Abundant.

Color.--New foliage: Greyed Red Group 178A for both surfaces. Oldfoliage: Green Group 136B for the upper surface Green Group 136C for thelower surface.

Leaflets:

Shape.--Pointed oval.

Texture.--Upper side: Leathery, glossy.

Edge.--Serrated.

Serration.--Single, small.

Petiole rachis.--Color: Reddish.

Petiole underside.--Smooth, with occasional prickles.

Stipules.--Medium (1/2 inch), serrated.

Disease resistance.--Resistant to mildew and rust under normal growingconditions at Somis, Calif.

Wood:

New wood.--Color: Light green. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form.--Medium (3/8 inch), hooked downward.

Color when young.--Red.

Small Prickles:

Quantity.--On main stalks: None. On laterals: None.

I claim:
 1. A new and distinct variety of rose plant of the hybrid teaclass, substantially as herein shown and described, characterizedparticularly as to novelty by the unique combination of its vigorous,upright branching growth habit; its formal, hybrid tea-shaped flower inattractive pastel shades; its glossy, dark green, leathery foliage; itsresistance to powdery mildew and rust; and its very pleasant,light-to-moderate scent.